Found 5 Documents

Jurnal Radioisotop dan Radiofarmaka Vol 8 (2005): JURNAL PRR 2005
Publisher : Jurnal Radioisotop dan Radiofarmaka

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PENGARUH PENCUCIAN LARUTAN NaOCl DAN PENAMBAHAN KOLOM KEDUA ALUMINA TERHADAP YIELDDAN LOLOSAN Mo-99 DARI GENERATOR Mo-99/Tc-99m BERBASIS PZC. Alumina merupakan salah satu bahan utama dalam generator Mo-99/Tc-99m yang berfungsi sebagai zat pengadsorpsi molibdenum. Keterbatasan daya serap alumina terhadap molibdenum menyebabkan senyawa ini tidak dapat digunakan sebagai pengisi kolom untuk generator Mo-99/Tc-99m yang menggunakan Mo-99 hasil aktivasi neutron. Dengan diketemukannya senyawa baru sebagai zat pengadsorpsi molibdenum yaitu PZC (poly zirconium compound), telah memberikan harapan baru untuk dapat dilakukannya pembuatan generator Mo-99/Tc-99m. Penelitian pembuatan generator Mo-99/Tc-99m dengan menggunakan senyawa PZC sebagai adsorbent merupakan bentuk kerjasama antara PRR-BATAN Serpong dengan JAERI dan Kaken Co. Jepang. Dalam penelitian ini telah dilakukan percobaan pembuatan generator Mo-99/Tc-99m dengan melihat pengaruh penambahan pencucian menggunakan larutan NaOCl terhadap Yield dan lolosan Mo-99(Mo-99 breakthrough) dalam larutan Tc-99m hasil elusi . Parameter lainnya yang digunakan untuk mengurangi lolosan Mo-99 dalam Tc-99m hasil elusi adalah penambahan kolom alumina yang ditempatkan setelah kolom Mo-99 PZC.Hasil penentuan kapasitas serap senyawa PZC terhadap molibdenum diperoleh dengan melihat aktivitas Mo-99 setelah pemanasan 3 jam campuran PZC dan molibdenum dan diperoleh hasil setiap gram PZC mampu menyerap 80-95 % mg dari 268 mg molibdenum yang direaksikan. Hasil penentuan yield elusi generator Mo-99/Tc-99m dengan larutan pencuci salin diperoleh < 50 % dan Yield meningkat menjadi > 80 % setelah pencucian dilakukan dengan menggunakan larutan NaOCl 0,5 % atau 1 % . Penggunaan larutan pencuci NaOCl 0,5 % dan penggunaan kolom alumina sebagai kolom kedua mampu menjaga kestabilan Yield hasil elusi dan meminimalkan lolosan Mo-99 pada Tc-99m hasil elusi. Kata kunci: alumina, generator PZC, Mo-99,Tc-99m, NaOCl Alumina is one of main material in Mo-99/Tc-99m generator as molybdenum adsorbent. Limitation of alumina adsorption capacity to molybdenum cause this material cannot be applied as column filler for generator Mo-99/Tc-99m using Mo-99 from neutron activation . The invention of new compound as molybdenum adsorbent , PZC ( poly zirconium compound), have shown that the materials is a promising adsorbent for generator Mo-99/Tc-99m from (n,?) irradiated molybdenum. The research of generator Mo-99/Tc-99m by using adsorbent PZC is form of cooperation between PRR-BATAN Serpong with JAERI and Kaken Co. Japan. In this research, the effects of addition of NaOCl solution to elution yield and Mo-99 breakthrough have been done. The other parameter used in this experiment to minimize Mo-99 breakthrough in Tc-99m is addition of second column alumina placed after Mo-99 PZC column. Adsorption capacity of PZC material to molybdenum determined by heating Mo-99 solution with PZC up to 3 hours and the result indicated 1 gram PZC adsorbed 80-95 % Mo-99 from the reacted 268 mg molybdenum. Yield percentage of the Mo-99/Tc-99m generator without rinsed by saline solution obtained < 50 % and the yield increased > 80 % after the column washing by using NaOCl 0,5 % or 1 % solutions. Usage of both NaOCl 0,5 % solution and alumina column as second column can give yield stability and minimize Mo-99 breakthrough at Tc-99m effluent. Key words: Alumina, PZC generator,Mo-99,Tc-99m, NaOCl
The Assessment of Soil Phosphate Availability using Sorption Curve on Newly Open Lowland Areas KASNO, ANTONIUS; SULAEMAN, .; DWINININGSIH, SUTISNI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 18 (2000): Desember 2000
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.2017/jti.v0i18.305


Rice growth in the newly open lowland areas is restricted, especially nutrients availability. The purposes of the research as to study the sorption of soil P and soil P availability rice growth of the newly lowland. The field experimental is located at Dwijaya, Tugumulyo, Musi Rawas, South Sumatra province. Soil P-sorption was analysed in the laboratory for wet and dry soil samples, with two CaCI2 concentration (i.e.: 0.01 and 0.005 M). Soil fertility status of experimental site is very poor with N, P, K, Ca, Mg and organic matter as limiting factors for crop growth. Maximum rice yield in the site was achieved by P fertilizer application of 767 kg of SP-36, and correspond to available soil P (Bray 1) content of 5 ppm P. The phosphorus standard requirements in 0.01 and 0.005 M CaCI2 extracting solution are found to be 0.0051 and 0.0018 ppm P for wet soil sample and 0.009 and 0.003 ppm P for dry soil sample respectively.
Enhancing the Reactivity of Phosphate Rocks by Acidulation SULAEMAN, .; SUPARTO, .; EVIATI, .
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 20 (2002): Desember 2002
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.2017/jti.v0i20.291


Indonesian soils requiring a considerably large amount of P fertilizer, since it comprises a large area of phosphate poor soils as Ultisols, Oxisols, and part of Inceptisols. Phosphate rock, particularly of domestic origin, is one of cheapest P sources if it can be applied directly. Acidulation is performed to obtain sufficiently reactive phosphate rocks to give dissolved P (in weak acid) required by annual crops, although not too soluble (in water) to easily leach. The objective of this study was to obtain an efficient P source fertilizer with inexpensive production cost. Eight types of phosphate rocks of domestic and overseas origins were gradually acidulated with sulphuricand phosphoric acids. P fertilizers reactivity were tested by using extracted P content in water, citric acid, and formic acid to total P content ratio. The results showed that the reactivity (in citric acid) orders of tested phosphate rocks were Ciamis &gt; Cileungsi &gt; Algeria &gt; Gresik &gt; Maroko &gt; Sukabumi &gt;Christmas &gt; Senegal. Based on gained regression equation, total P content and reactivity of produced fertilizer for each degree of acidulation with H2SO4 and H3PO4 can be calculated. Water extractant gives the most sensitive indicator value of increased reactivity, followed by citric and formic acids.
Point of Zero Charge Determination and the Inluence of P, Basic Slag, Organic Matter and Lime Applications on Colloidal Charge and Quality of Oxisols ANDA, MARKUS; KASNO, ANTONIUS; HARTATIK, WIWIK; SULAEMAN, .; ADININGSIH, J. SRI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 19 (2001): Desember 2001
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.2017/jti.v0i19.296


The colloidal charge manipulation of highly weathered soils using point of zero charge (PZC or pHo) approach is important in improving soil chemical properties. The objective of this study was to determine the PZC and manipulate colloidal charge surfaces of Oxisols in order to increase their quality. PZC was determined by adjusting pH values from 3 to 7 using potentiometric titration. The change of colloidal surface charges was measured using two extractants; NH4-acetat pH 7 and NH4Cl. A glass house experiment was carried out using 4.5 kg soil/pot. Soil was taken from Sonay, South East Sulawesi and from Sitiung, West Sumatra. Soil was taken from surface layer (0-20 cm) and subsurface layer (20-40 cm) for each location. Four factors consisted of P fertilizer, basic slag, organic matter and lime were used to manipulate colloidal surface charge. The treatment rates were 100, 200 and 400 ppm P for P fertilizer; 2, 4 and 8 t/ha for basic slag; 10, 20 and 40 t/ha for organic matter; 1.5, 3 and 6 t/ha for lime, and a complete control. All 13 treatments with three replications, were arranged using a randomized complete block design in which each layer of two Oxisols is used as a block. The results showed that values of PZC for a surface layer of Sonay Oxisol (OSY) and for surface and subsurface layers of Sitiung Oxisol (OSG) are similar, i.e, pHo was 3.5. In addition, the PZC value for the subsurface layer of OSY occurs at pH 5 which is the highest pHo value compared to three other layers. The PZC value of OSY, at a surface layer is higher than its soil pH value (5.0 vs 4.4) suggesting that colloidal surfaces bear a positive charge. In contrast, the PZC values for the surface layer of OSY and surface and subsurface layers of OSG were lower than their soil pH values, indicating the colloidal surfaces bear a negative charge. Application of P, basic slag, organic matter, and lime was able to manipulate colloidal charge surfaces having positive charges become negative and that the low negative charge of colloidal surfaces become more negative as evidenced from the increase cation exchange capacity (measured in NH4Cl) compared to a control treatment. Application of P, basic slag,organic matter, and lime could increased quality of Oxisols as shown by decreasing K leaching and by increased soybean yields, which drastically increased compared to a control treatment.
Regional Partnership Program in Developing of Potential Agricultural Resource Based on Integrated Agricultural Technology in Buol Distric Hayati, Nur; Najamudin, .; Sulaeman, .; Lasmini, Sri Anjar
Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Vol 4, No 2 (2018): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.4.2.174-180


Lakea Sub-district, Buol District has a wealth of natural resources (SDA) potential in the form of large and fertile plains area that can be developed into agricultural land for food crops and horticulture, areas with hilly topography can be developed various types of plantation commodities, forest resources that can be cultivated MPTS and marine potential. To optimize the potential of natural resources is needed integrated agricultural technology that can be applied by the community. Regional partnership program aims to assist the community in exploiting the potential of natural resources owned by kindly and wisely through integrated agricultural technology innovation to improve their welfare. PKW is implemented in two villages in Lakea Sub-District, Lakea I and Ngune Village. The methods used in the implementation of the program include: training, plot demonstration technology, guidance, and community assistance. The results of the program implementation showed that the adoption of technology was good enough from the target community group which is showed by the transfer of technology in the development of SRI rice cultivation with legowo row planting system, the development and entrepreneurship of local-made production facilities include bioinsecticide development Beauveria bassiana, Trichoderma sp biofungicide, liquids organic fertilizer and granules, development of PKW production facilities, and development of forage grazing garden with Panicum sarmentosum grass cultivation. The technology assembly is as the result of a suitable PKW team study to be developed in the Lakea District of Buol Regency in utilizing and developing the potential of natural resources in the program target location. Results of demonstration plot of rice cultivation of SRI with legowo 2:1 row planting system resulted in rice production of 4.7 t ha-1 higher than the conventional were 3.5 t ha-1.